git.sesse.net Git - vlc/blob - src/playlist/item.c

   1 /*****************************************************************************
   2  * item.c : Playlist item creation/deletion/add/removal functions
   3  *****************************************************************************
   4  * Copyright (C) 1999-2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Clément Stenac <zorglub@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <vlc_common.h>
  29 #include <assert.h>
  30 #include <vlc_playlist.h>
  31 #include "playlist_internal.h"
  32
  33 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
  34                      playlist_item_t *p_node, int i_mode, int i_pos );
  35 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
  36                            playlist_item_t *, playlist_item_t * );
  37 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item );
  38 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
  39                         bool b_stop );
  40
  41 /*****************************************************************************
  42  * An input item has gained a subitem (Event Callback)
  43  *****************************************************************************/
  44 static void input_item_subitem_added( const vlc_event_t * p_event,
  45                                       void * user_data )
  46 {
  47     playlist_item_t *p_parent_playlist_item = user_data;
  48     playlist_t * p_playlist = p_parent_playlist_item->p_playlist;
  49     input_item_t * p_parent, * p_child;
  50     playlist_item_t * p_child_in_category;
  51     playlist_item_t * p_item_in_category;
  52     bool b_play;
  53
  54     p_parent = p_event->p_obj;
  55     p_child = p_event->u.input_item_subitem_added.p_new_child;
  56
  57     PL_LOCK;
  58     b_play = var_CreateGetBool( p_playlist, "playlist-autostart" );
  59
  60     /* This part is really hakish, but this playlist system isn't simple */
  61     /* First check if we haven't already added the item as we are
  62      * listening using the onelevel and the category representent
  63      * (Because of the playlist design) */
  64     p_child_in_category = playlist_ItemFindFromInputAndRoot(
  65                             p_playlist, p_child->i_id,
  66                             p_playlist->p_root_category,
  67                             false /* Only non-node */ );
  68
  69     if( !p_child_in_category )
  70     {
  71         /* Then, transform to a node if needed */
  72         p_item_in_category = playlist_ItemFindFromInputAndRoot(
  73                                 p_playlist, p_parent->i_id,
  74                                 p_playlist->p_root_category,
  75                                 false /* Only non-node */ );
  76         if( !p_item_in_category )
  77         {
  78             /* Item may have been removed */
  79             PL_UNLOCK;
  80             return;
  81         }
  82
  83         b_play = b_play &&
  84             p_item_in_category == get_current_status_item( p_playlist );
  85
  86         /* If this item is already a node don't transform it */
  87         if( p_item_in_category->i_children == -1 )
  88         {
  89             p_item_in_category = playlist_ItemToNode( p_playlist,
  90                     p_item_in_category, pl_Locked );
  91             p_item_in_category->p_input->i_type = ITEM_TYPE_PLAYLIST;
  92         }
  93
  94         int i_ret = playlist_BothAddInput( p_playlist, p_child,
  95                 p_item_in_category,
  96                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE , PLAYLIST_END,
  97                 NULL, NULL, pl_Locked );
  98
  99         if( i_ret == VLC_SUCCESS && b_play )
 100         {
 101             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 102                           pl_Locked, p_item_in_category, NULL );
 103         }
 104     }
 105
 106     PL_UNLOCK;
 107
 108 }
 109
 110 /*****************************************************************************
 111  * An input item's meta or duration has changed (Event Callback)
 112  *****************************************************************************/
 113 static void input_item_changed( const vlc_event_t * p_event,
 114                                 void * user_data )
 115 {
 116     (void)p_event;
 117     playlist_item_t * p_item = user_data;
 118     var_SetInteger( p_item->p_playlist, "item-change", p_item->i_id );
 119 }
 120
 121 /*****************************************************************************
 122  * Listen to vlc_InputItemAddSubItem event
 123  *****************************************************************************/
 124 static void install_input_item_observer( playlist_item_t * p_item )
 125 {
 126     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 127     vlc_event_attach( p_em, vlc_InputItemSubItemAdded,
 128                       input_item_subitem_added, p_item );
 129     vlc_event_attach( p_em, vlc_InputItemDurationChanged,
 130                       input_item_changed, p_item );
 131     vlc_event_attach( p_em, vlc_InputItemMetaChanged,
 132                       input_item_changed, p_item );
 133     vlc_event_attach( p_em, vlc_InputItemNameChanged,
 134                       input_item_changed, p_item );
 135     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
 136                       input_item_changed, p_item );
 137     vlc_event_attach( p_em, vlc_InputItemErrorWhenReadingChanged,
 138                       input_item_changed, p_item );
 139 }
 140
 141 static void uninstall_input_item_observer( playlist_item_t * p_item )
 142 {
 143     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 144     vlc_event_detach( p_em, vlc_InputItemSubItemAdded,
 145                       input_item_subitem_added, p_item );
 146     vlc_event_detach( p_em, vlc_InputItemMetaChanged,
 147                       input_item_changed, p_item );
 148     vlc_event_detach( p_em, vlc_InputItemDurationChanged,
 149                       input_item_changed, p_item );
 150     vlc_event_detach( p_em, vlc_InputItemNameChanged,
 151                       input_item_changed, p_item );
 152     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
 153                       input_item_changed, p_item );
 154     vlc_event_detach( p_em, vlc_InputItemErrorWhenReadingChanged,
 155                       input_item_changed, p_item );
 156 }
 157
 158 /*****************************************************************************
 159  * Playlist item creation
 160  *****************************************************************************/
 161 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 162                                               input_item_t *p_input )
 163 {
 164     DECMALLOC_NULL( p_item, playlist_item_t );
 165
 166     assert( p_input );
 167
 168     p_item->p_input = p_input;
 169     vlc_gc_incref( p_item->p_input );
 170
 171     p_item->i_id = ++p_playlist->i_last_playlist_id;
 172
 173     p_item->p_parent = NULL;
 174     p_item->i_children = -1;
 175     p_item->pp_children = NULL;
 176     p_item->i_flags = 0;
 177     p_item->p_playlist = p_playlist;
 178
 179     install_input_item_observer( p_item );
 180
 181     return p_item;
 182 }
 183
 184 playlist_item_t * playlist_ItemNewWithType( playlist_t *p_playlist,
 185                                             const char *psz_uri,
 186                                             const char *psz_name,
 187                                             int i_options,
 188                                             const char *const *ppsz_options,
 189                                             int i_duration, int i_type )
 190 {
 191     input_item_t *p_input;
 192     if( psz_uri == NULL ) return NULL;
 193     p_input = input_item_NewWithType( VLC_OBJECT(p_playlist), psz_uri,
 194                                      psz_name, i_options, ppsz_options,
 195                                      i_duration, i_type );
 196     return playlist_ItemNewFromInput( p_playlist, p_input );
 197 }
 198
 199 /***************************************************************************
 200  * Playlist item destruction
 201  ***************************************************************************/
 202
 203 /**
 204  * Release an item
 205  *
 206  * \param p_item item to delete
 207  * \return VLC_SUCCESS
 208 */
 209 int playlist_ItemRelease( playlist_item_t *p_item )
 210 {
 211     /* For the assert */
 212     playlist_t *p_playlist = p_item->p_playlist;
 213     PL_ASSERT_LOCKED;
 214
 215     /* Surprise, we can't actually do more because we
 216      * don't do refcounting, or eauivalent.
 217      * Because item are not only accessed by their id
 218      * using playlist_item outside the PL_LOCK isn't safe.
 219      * Most of the modules does that.
 220      *
 221      * Who wants to add proper memory management? */
 222     uninstall_input_item_observer( p_item );
 223     ARRAY_APPEND( pl_priv(p_playlist)->items_to_delete, p_item);
 224     return VLC_SUCCESS;
 225 }
 226
 227 /**
 228  * Delete input item
 229  *
 230  * Remove an input item when it appears from a root playlist item
 231  * \param p_playlist playlist object
 232  * \param i_input_id id of the input to delete
 233  * \param p_root root playlist item
 234  * \param b_do_stop must stop or not the playlist
 235  * \return VLC_SUCCESS or VLC_EGENERIC
 236 */
 237 static int DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 238                             playlist_item_t *p_root, bool b_do_stop )
 239 {
 240     int i;
 241     PL_ASSERT_LOCKED;
 242     for( i = 0 ; i< p_root->i_children ; i++ )
 243     {
 244         if( p_root->pp_children[i]->i_children == -1 &&
 245             p_root->pp_children[i]->p_input->i_id == i_input_id )
 246         {
 247             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
 248             return VLC_SUCCESS;
 249         }
 250         else if( p_root->pp_children[i]->i_children >= 0 )
 251         {
 252             int i_ret = DeleteFromInput( p_playlist, i_input_id,
 253                                          p_root->pp_children[i], b_do_stop );
 254             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
 255         }
 256     }
 257     return VLC_EGENERIC;
 258 }
 259
 260 /**
 261  * Delete input item
 262  *
 263  * Remove an input item when it appears from a root playlist item
 264  * \param p_playlist playlist object
 265  * \param i_input_id id of the input to delete
 266  * \param p_root root playlist item
 267  * \param b_locked TRUE if the playlist is locked
 268  * \return VLC_SUCCESS or VLC_EGENERIC
 269  */
 270 int playlist_DeleteFromInputInParent( playlist_t *p_playlist, int i_input_id,
 271                                       playlist_item_t *p_root, bool b_locked )
 272 {
 273     int i_ret;
 274     PL_LOCK_IF( !b_locked );
 275     i_ret = DeleteFromInput( p_playlist, i_input_id,
 276                              p_root, true );
 277     PL_UNLOCK_IF( !b_locked );
 278     return i_ret;
 279 }
 280
 281 /**
 282  * Delete from input
 283  *
 284  * Remove an input item from ONELEVEL and CATEGORY
 285  * \param p_playlist playlist object
 286  * \param i_input_id id of the input to delete
 287  * \param b_locked TRUE if the playlist is locked
 288  * \return VLC_SUCCESS or VLC_ENOITEM
 289  */
 290 int playlist_DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 291                               bool b_locked )
 292 {
 293     int i_ret1, i_ret2;
 294     PL_LOCK_IF( !b_locked );
 295     i_ret1 = DeleteFromInput( p_playlist, i_input_id,
 296                              p_playlist->p_root_category, true );
 297     i_ret2 = DeleteFromInput( p_playlist, i_input_id,
 298                      p_playlist->p_root_onelevel, true );
 299     PL_UNLOCK_IF( !b_locked );
 300     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
 301                             VLC_SUCCESS : VLC_ENOITEM;
 302 }
 303
 304 /**
 305  * Clear the playlist
 306  *
 307  * \param p_playlist playlist object
 308  * \param b_locked TRUE if the playlist is locked
 309  * \return nothing
 310  */
 311 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 312 {
 313     PL_LOCK_IF( !b_locked );
 314     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, true );
 315     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, true );
 316     PL_UNLOCK_IF( !b_locked );
 317 }
 318
 319 /**
 320  * Delete playlist item
 321  *
 322  * Remove a playlist item from the playlist, given its id
 323  * This function is to be used only by the playlist
 324  * \param p_playlist playlist object
 325  * \param i_id id of the item do delete
 326  * \return VLC_SUCCESS or an error
 327  */
 328 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 329 {
 330     PL_ASSERT_LOCKED;
 331     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id,
 332                                                     pl_Locked );
 333     if( !p_item ) return VLC_EGENERIC;
 334     return DeleteInner( p_playlist, p_item, true );
 335 }
 336
 337 /***************************************************************************
 338  * Playlist item addition
 339  ***************************************************************************/
 340 /**
 341  * Playlist add
 342  *
 343  * Add an item to the playlist or the media library
 344  * \param p_playlist the playlist to add into
 345  * \param psz_uri the mrl to add to the playlist
 346  * \param psz_name a text giving a name or description of this item
 347  * \param i_mode the mode used when adding
 348  * \param i_pos the position in the playlist where to add. If this is
 349  *        PLAYLIST_END the item will be added at the end of the playlist
 350  *        regardless of its size
 351  * \param b_playlist TRUE for playlist, FALSE for media library
 352  * \param b_locked TRUE if the playlist is locked
 353  * \return The id of the playlist item
 354  */
 355 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 356                   const char *psz_name, int i_mode, int i_pos,
 357                   bool b_playlist, bool b_locked )
 358 {
 359     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 360                             i_mode, i_pos, -1, NULL, 0, b_playlist, b_locked );
 361 }
 362
 363 /**
 364  * Add a MRL into the playlist or the media library, duration and options given
 365  *
 366  * \param p_playlist the playlist to add into
 367  * \param psz_uri the mrl to add to the playlist
 368  * \param psz_name a text giving a name or description of this item
 369  * \param i_mode the mode used when adding
 370  * \param i_pos the position in the playlist where to add. If this is
 371  *        PLAYLIST_END the item will be added at the end of the playlist
 372  *        regardless of its size
 373  * \param i_duration length of the item in milliseconds.
 374  * \param ppsz_options an array of options
 375  * \param i_options the number of options
 376  * \param b_playlist TRUE for playlist, FALSE for media library
 377  * \param b_locked TRUE if the playlist is locked
 378  * \return The id of the playlist item
 379 */
 380 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 381                      const char *psz_name, int i_mode, int i_pos,
 382                      mtime_t i_duration, const char *const *ppsz_options,
 383                      int i_options, bool b_playlist, bool b_locked )
 384 {
 385     int i_ret;
 386     input_item_t *p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 387                                               i_options, ppsz_options,
 388                                               i_duration );
 389
 390     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 391                                b_locked );
 392     int i_id = (i_ret == VLC_SUCCESS) ? p_input->i_id : -1;
 393
 394     vlc_gc_decref( p_input );
 395
 396     return i_id;
 397 }
 398
 399 /**
 400  * Add an input item to the playlist node
 401  *
 402  * \param p_playlist the playlist to add into
 403  * \param p_input the input item to add
 404  * \param i_mode the mode used when adding
 405  * \param i_pos the position in the playlist where to add. If this is
 406  *        PLAYLIST_END the item will be added at the end of the playlist
 407  *        regardless of its size
 408  * \param b_playlist TRUE for playlist, FALSE for media library
 409  * \param b_locked TRUE if the playlist is locked
 410  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 411 */
 412 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 413                        int i_mode, int i_pos, bool b_playlist,
 414                        bool b_locked )
 415 {
 416     playlist_item_t *p_item_cat, *p_item_one;
 417     if( p_playlist->b_die ) return VLC_EGENERIC;
 418     if( !pl_priv(p_playlist)->b_doing_ml )
 419         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 420                                              p_input->psz_uri );
 421
 422     PL_LOCK_IF( !b_locked );
 423
 424     /* Add to ONELEVEL */
 425     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 426     if( p_item_one == NULL ) return VLC_ENOMEM;
 427     AddItem( p_playlist, p_item_one,
 428              b_playlist ? p_playlist->p_local_onelevel :
 429                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 430
 431     /* Add to CATEGORY */
 432     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 433     if( p_item_cat == NULL ) return VLC_ENOMEM;
 434     AddItem( p_playlist, p_item_cat,
 435              b_playlist ? p_playlist->p_local_category :
 436                           p_playlist->p_ml_category , i_mode, i_pos );
 437
 438     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 439
 440     PL_UNLOCK_IF( !b_locked );
 441     return VLC_SUCCESS;
 442 }
 443
 444 /**
 445  * Add input
 446  *
 447  * Add an input item to p_direct_parent in the category tree, and to the
 448  * matching top category in onelevel
 449  * \param p_playlist the playlist to add into
 450  * \param p_input the input item to add
 451  * \param p_direct_parent the parent item to add into
 452  * \param i_mode the mode used when adding
 453  * \param i_pos the position in the playlist where to add. If this is
 454  *        PLAYLIST_END the item will be added at the end of the playlist
 455  *        regardless of its size
 456  * \param i_cat id of the items category
 457  * \param i_one id of the item onelevel category
 458  * \param b_locked TRUE if the playlist is locked
 459  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 460  */
 461 int playlist_BothAddInput( playlist_t *p_playlist,
 462                            input_item_t *p_input,
 463                            playlist_item_t *p_direct_parent,
 464                            int i_mode, int i_pos,
 465                            int *i_cat, int *i_one, bool b_locked )
 466 {
 467     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 468     int i_top;
 469     assert( p_input );
 470
 471     if( !vlc_object_alive( p_playlist ) )
 472         return VLC_EGENERIC;
 473
 474     PL_LOCK_IF( !b_locked );
 475
 476     /* Add to category */
 477     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 478     if( p_item_cat == NULL ) return VLC_ENOMEM;
 479     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 480
 481     /* Add to onelevel */
 482     /** \todo make a faster case for ml import */
 483     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 484     if( p_item_one == NULL ) return VLC_ENOMEM;
 485
 486     p_up = p_direct_parent;
 487     while( p_up->p_parent != p_playlist->p_root_category )
 488     {
 489         p_up = p_up->p_parent;
 490     }
 491     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 492     {
 493         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input->i_id ==
 494                              p_up->p_input->i_id )
 495         {
 496             AddItem( p_playlist, p_item_one,
 497                      p_playlist->p_root_onelevel->pp_children[i_top],
 498                      i_mode, i_pos );
 499             break;
 500         }
 501     }
 502     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 503
 504     if( i_cat ) *i_cat = p_item_cat->i_id;
 505     if( i_one ) *i_one = p_item_one->i_id;
 506
 507     PL_UNLOCK_IF( !b_locked );
 508     return VLC_SUCCESS;
 509 }
 510
 511 /**
 512  * Add an input item to a given node
 513  *
 514  * \param p_playlist the playlist to add into
 515  * \param p_input the input item to add
 516  * \param p_parent the parent item to add into
 517  * \param i_mode the mode used when addin
 518  * \param i_pos the position in the playlist where to add. If this is
 519  *        PLAYLIST_END the item will be added at the end of the playlist
 520  *        regardless of its size
 521  * \param b_locked TRUE if the playlist is locked
 522  * \return the new playlist item
 523  */
 524 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 525                                          input_item_t *p_input,
 526                                          playlist_item_t *p_parent,
 527                                          int i_mode, int i_pos,
 528                                          bool b_locked )
 529 {
 530     playlist_item_t *p_item;
 531     assert( p_input );
 532     assert( p_parent && p_parent->i_children != -1 );
 533
 534     if( p_playlist->b_die )
 535         return NULL;
 536     PL_LOCK_IF( !b_locked );
 537
 538     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 539     if( p_item == NULL ) return NULL;
 540     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 541
 542     PL_UNLOCK_IF( !b_locked );
 543
 544     return p_item;
 545 }
 546
 547 /*****************************************************************************
 548  * Playlist item misc operations
 549  *****************************************************************************/
 550
 551 /**
 552  * Item to node
 553  *
 554  * Transform an item to a node. Return the node in the category tree, or NULL
 555  * if not found there
 556  * This function must be entered without the playlist lock
 557  * \param p_playlist the playlist object
 558  * \param p_item the item to transform
 559  * \param b_locked TRUE if the playlist is locked
 560  * \return the item transform in a node
 561  */
 562 playlist_item_t *playlist_ItemToNode( playlist_t *p_playlist,
 563                                       playlist_item_t *p_item,
 564                                       bool b_locked )
 565 {
 566
 567     playlist_item_t *p_item_in_category;
 568     /* What we do
 569      * Find the input in CATEGORY.
 570      *  - If we find it
 571      *    - change it to node
 572      *    - we'll return it at the end
 573      *    - If we are a direct child of onelevel root, change to node, else
 574      *      delete the input from ONELEVEL
 575      *  - If we don't find it, just change to node (we are probably in VLM)
 576      *    and return NULL
 577      *
 578      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 579      * useful for later BothAddInput )
 580      */
 581
 582     PL_LOCK_IF( !b_locked );
 583
 584     /* Fast track the media library, no time to loose */
 585     if( p_item == p_playlist->p_ml_category ) {
 586         PL_UNLOCK_IF( !b_locked );
 587         return p_item;
 588     }
 589
 590     /** \todo First look if we don't already have it */
 591     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 592                                             p_playlist, p_item->p_input->i_id,
 593                                             p_playlist->p_root_category,
 594                                             true );
 595
 596     if( p_item_in_category )
 597     {
 598         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 599                                             p_playlist, p_item->p_input->i_id,
 600                                             p_playlist->p_root_onelevel,
 601                                             true );
 602         assert( p_item_in_one );
 603
 604         /* We already have it, and there is nothing more to do */
 605         ChangeToNode( p_playlist, p_item_in_category );
 606
 607         /* Item in one is a root, change it to node */
 608         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 609             ChangeToNode( p_playlist, p_item_in_one );
 610         else
 611         {
 612             playlist_item_t *p_status_item = get_current_status_item( p_playlist );
 613             playlist_item_t *p_status_node = get_current_status_node( p_playlist );
 614             if( p_item_in_one == p_status_item )
 615             {
 616                 /* We're deleting the current playlist item. Update
 617                  * the playlist object to point at the previous item
 618                  * so the playlist won't be restarted */
 619                 playlist_item_t *p_prev_status_item = NULL;
 620                 int i = 0;
 621                 while( i < p_status_node->i_children &&
 622                        p_status_node->pp_children[i] != p_status_item )
 623                 {
 624                     p_prev_status_item = p_status_node->pp_children[i];
 625                     i++;
 626                 }
 627                 if( i == p_status_node->i_children )
 628                     p_prev_status_item = NULL;
 629                 if( p_prev_status_item )
 630                     set_current_status_item( p_playlist, p_prev_status_item );
 631             }
 632             DeleteFromInput( p_playlist, p_item_in_one->p_input->i_id,
 633                              p_playlist->p_root_onelevel, false );
 634         }
 635         p_playlist->b_reset_currently_playing = true;
 636         vlc_object_signal_unlocked( p_playlist );
 637         var_SetInteger( p_playlist, "item-change", p_item_in_category->
 638                                                         p_input->i_id );
 639         PL_UNLOCK_IF( !b_locked );
 640         return p_item_in_category;
 641     }
 642     else
 643     {
 644         ChangeToNode( p_playlist, p_item );
 645         PL_UNLOCK_IF( !b_locked );
 646         return p_item;
 647     }
 648 }
 649
 650 /**
 651  * Find an item within a root, given its input id.
 652  *
 653  * \param p_playlist the playlist object
 654  * \param i_input_id id of the input
 655  * \param p_root root playlist item
 656  * \param b_items_only TRUE if we want the item himself
 657  * \return the first found item, or NULL if not found
 658  */
 659 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 660                                                     int i_input_id,
 661                                                     playlist_item_t *p_root,
 662                                                     bool b_items_only )
 663 {
 664     int i;
 665     for( i = 0 ; i< p_root->i_children ; i++ )
 666     {
 667         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 668             p_root->pp_children[i]->p_input->i_id == i_input_id )
 669         {
 670             return p_root->pp_children[i];
 671         }
 672         else if( p_root->pp_children[i]->i_children >= 0 )
 673         {
 674             playlist_item_t *p_search =
 675                  playlist_ItemFindFromInputAndRoot( p_playlist, i_input_id,
 676                                                     p_root->pp_children[i],
 677                                                     b_items_only );
 678             if( p_search ) return p_search;
 679         }
 680     }
 681     return NULL;
 682 }
 683
 684
 685 static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
 686                      playlist_item_t *p_node, int i_newpos )
 687 {
 688     int j;
 689     playlist_item_t *p_detach = p_item->p_parent;
 690     (void)p_playlist;
 691
 692     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 693
 694     for( j = 0; j < p_detach->i_children; j++ )
 695     {
 696          if( p_detach->pp_children[j] == p_item ) break;
 697     }
 698     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );
 699
 700     /* If j < i_newpos, we are moving the element from the top to the
 701      * down of the playlist. So when removing the element we change have
 702      * to change the position as we loose one element
 703      */
 704     if( j < i_newpos )
 705         i_newpos--;
 706
 707     /* Attach to new parent */
 708     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 709     p_item->p_parent = p_node;
 710
 711     return VLC_SUCCESS;
 712 }
 713
 714 /**
 715  * Moves an item
 716  *
 717  * This function must be entered with the playlist lock
 718  *
 719  * \param p_playlist the playlist
 720  * \param p_item the item to move
 721  * \param p_node the new parent of the item
 722  * \param i_newpos the new position under this new parent
 723  * \return VLC_SUCCESS or an error
 724  */
 725 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 726                        playlist_item_t *p_node, int i_newpos )
 727 {
 728     int i_ret;
 729     PL_ASSERT_LOCKED;
 730
 731     /* Drop on a top level node. Move in the two trees */
 732     if( p_node->p_parent == p_playlist->p_root_category ||
 733         p_node->p_parent == p_playlist->p_root_onelevel )
 734     {
 735         /* Fixme: avoid useless lookups but we need some clean helpers */
 736         {
 737             /* Fixme: if we try to move a node on a top-level node, it will
 738              * fail because the node doesn't exist in onelevel and we will
 739              * do some shit in onelevel. We should recursively move all items
 740              * within the node */
 741             playlist_item_t *p_node_onelevel;
 742             playlist_item_t *p_item_onelevel;
 743             p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 744                                                 p_node->p_input->i_id,
 745                                                 p_playlist->p_root_onelevel,
 746                                                 false );
 747             p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 748                                                 p_item->p_input->i_id,
 749                                                 p_playlist->p_root_onelevel,
 750                                                 false );
 751             if( p_node_onelevel && p_item_onelevel )
 752                 TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, i_newpos );
 753         }
 754         {
 755             playlist_item_t *p_node_category;
 756             playlist_item_t *p_item_category;
 757             p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 758                                                 p_node->p_input->i_id,
 759                                                 p_playlist->p_root_category,
 760                                                 false );
 761             p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 762                                                 p_item->p_input->i_id,
 763                                                 p_playlist->p_root_category,
 764                                                 false );
 765             if( p_node_category && p_item_category )
 766                 TreeMove( p_playlist, p_item_category, p_node_category, 0 );
 767         }
 768         i_ret = VLC_SUCCESS;
 769     }
 770     else
 771         i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
 772     p_playlist->b_reset_currently_playing = true;
 773     vlc_object_signal_unlocked( p_playlist );
 774     return i_ret;
 775 }
 776
 777 /**
 778  * Send a notification that an item has been added to a node
 779  *
 780  * \param p_playlist the playlist object
 781  * \param i_item_id id of the item added
 782  * \param i_node_id id of the node in wich the item was added
 783  * \param b_signal TRUE if the function must send a signal
 784  * \return nothing
 785  */
 786 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 787                              int i_node_id, bool b_signal )
 788 {
 789     vlc_value_t val;
 790     PL_ASSERT_LOCKED;
 791
 792     playlist_add_t *p_add = (playlist_add_t *)malloc( sizeof( playlist_add_t) );
 793     if( !p_add )
 794         return;
 795
 796     p_add->i_item = i_item_id;
 797     p_add->i_node = i_node_id;
 798     val.p_address = p_add;
 799     p_playlist->b_reset_currently_playing = true;
 800     if( b_signal )
 801         vlc_object_signal_unlocked( p_playlist );
 802
 803     var_Set( p_playlist, "item-append", val );
 804     free( p_add );
 805 }
 806
 807 /*****************************************************************************
 808  * Playlist item accessors
 809  *****************************************************************************/
 810
 811 /**
 812  * Set the name of a playlist item
 813  *
 814  * \param p_item the item
 815  * \param psz_name the name
 816  * \return VLC_SUCCESS or VLC_EGENERIC
 817  */
 818 int playlist_ItemSetName( playlist_item_t *p_item, const char *psz_name )
 819 {
 820     if( psz_name && p_item )
 821     {
 822         input_item_SetName( p_item->p_input, psz_name );
 823         return VLC_SUCCESS;
 824     }
 825     return VLC_EGENERIC;
 826 }
 827
 828 /***************************************************************************
 829  * The following functions are local
 830  ***************************************************************************/
 831
 832 /* Enqueue an item for preparsing, and play it, if needed */
 833 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 834                            playlist_item_t *p_item_cat,
 835                            playlist_item_t *p_item_one )
 836 {
 837     PL_ASSERT_LOCKED;
 838     if( (i_mode & PLAYLIST_GO ) )
 839     {
 840         playlist_item_t *p_parent = p_item_one;
 841         playlist_item_t *p_toplay = NULL;
 842         while( p_parent )
 843         {
 844             if( p_parent == p_playlist->p_root_category )
 845             {
 846                 p_toplay = p_item_cat; break;
 847             }
 848             else if( p_parent == p_playlist->p_root_onelevel )
 849             {
 850                 p_toplay = p_item_one; break;
 851             }
 852             p_parent = p_parent->p_parent;
 853         }
 854         assert( p_toplay );
 855         pl_priv(p_playlist)->request.b_request = true;
 856         pl_priv(p_playlist)->request.i_skip = 0;
 857         pl_priv(p_playlist)->request.p_item = p_toplay;
 858         if( pl_priv(p_playlist)->p_input )
 859             input_StopThread( pl_priv(p_playlist)->p_input );
 860         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 861         vlc_object_signal_unlocked( p_playlist );
 862     }
 863     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 864     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 865     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 866     if( p_playlist->b_auto_preparse &&
 867           (i_mode & PLAYLIST_PREPARSE ||
 868           ( i_mode & PLAYLIST_SPREPARSE &&
 869             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 870           ) ) )
 871         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input );
 872     /* If we already have it, signal it */
 873     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 874         input_item_SetPreparsed( p_item_cat->p_input, true );
 875     free( psz_artist );
 876     free( psz_album );
 877 }
 878
 879 /* Add the playlist item to the requested node and fire a notification */
 880 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 881                      playlist_item_t *p_node, int i_mode, int i_pos )
 882 {
 883     PL_ASSERT_LOCKED;
 884     ARRAY_APPEND(p_playlist->items, p_item);
 885     ARRAY_APPEND(p_playlist->all_items, p_item);
 886
 887     if( i_pos == PLAYLIST_END )
 888         playlist_NodeAppend( p_playlist, p_item, p_node );
 889     else
 890         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 891
 892     if( !pl_priv(p_playlist)->b_doing_ml )
 893         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 894                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 895 }
 896
 897 /* Actually convert an item to a node */
 898 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 899 {
 900     int i;
 901     if( p_item->i_children == -1 )
 902         p_item->i_children = 0;
 903
 904     /* Remove it from the array of available items */
 905     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 906     if( i != -1 )
 907         ARRAY_REMOVE( p_playlist->items, i );
 908 }
 909
 910 /* Do the actual removal */
 911 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 912                         bool b_stop )
 913 {
 914     int i;
 915     int i_id = p_item->i_id;
 916     PL_ASSERT_LOCKED;
 917
 918     if( p_item->i_children > -1 )
 919     {
 920         return playlist_NodeDelete( p_playlist, p_item, true, false );
 921     }
 922     p_playlist->b_reset_currently_playing = true;
 923     var_SetInteger( p_playlist, "item-deleted", i_id );
 924
 925     /* Remove the item from the bank */
 926     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 927     if( i != -1 )
 928         ARRAY_REMOVE( p_playlist->all_items, i );
 929
 930     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 931     if( i != -1 )
 932         ARRAY_REMOVE( p_playlist->items, i );
 933
 934     /* Check if it is the current item */
 935     if( get_current_status_item( p_playlist ) == p_item )
 936     {
 937         /* Hack we don't call playlist_Control for lock reasons */
 938         if( b_stop )
 939         {
 940             pl_priv(p_playlist)->request.i_status = PLAYLIST_STOPPED;
 941             pl_priv(p_playlist)->request.b_request = true;
 942             pl_priv(p_playlist)->request.p_item = NULL;
 943             msg_Info( p_playlist, "stopping playback" );
 944             vlc_object_signal_unlocked( VLC_OBJECT(p_playlist) );
 945         }
 946     }
 947
 948     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 949
 950     /* Remove the item from its parent */
 951     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 952
 953     playlist_ItemRelease( p_item );
 954
 955     return VLC_SUCCESS;
 956 }